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Cometics On Small Blocks #164182
12/08/08 09:19 AM
12/08/08 09:19 AM
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Long Island, NY USA
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BergmanAutoCraft Offline OP
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I put Edelbrocks back on after a trip to Shadydell (thanks again Ryan). All is well, but I am noticing some oil seepage at the backs of both heads from the Cometic gaskets. I sprayed them with copper as I was instructed. Is this normal? Does synthetic oil have anything to do with this?

Re: Cometics On Small Blocks [Re: BergmanAutoCraft] #164183
12/08/08 09:36 AM
12/08/08 09:36 AM
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State College, PA
RyanJ Offline
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There is no oil at the back of a SB head...Only oil a head gasket seals on a SB is where it comes up from cam to feed the rockers..... it's almost for sure a slight trail running down from the manifold (from a tiny leak at the rear valley wall) following contour of head gasket & running down & dripping off.

Re: Cometics On Small Blocks [Re: RyanJ] #164184
12/08/08 10:53 AM
12/08/08 10:53 AM
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Sunnyvale, CA
Jeepmon Offline
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Hey Pete.. long time no talk to.. Hope all is well with you and yours..


The one thing I noticed with my Eddy's were the trail that Ryan mentioned.. I once has a small oil leak from the fuel pump block off plate that trailed the bottom side of the Eddys and dripped behind the oil filter..

So in your case, I would also look at the oil pressure sender and the back of the intake manifold..

Good luck to ya

Re: Cometics On Small Blocks [Re: Jeepmon] #164185
12/08/08 11:20 AM
12/08/08 11:20 AM
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Newport, Mi
Evil Spirit Offline
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It may be a trail as suggested, but I've also seen water and oil seepage that seems to be a product of design. It is usually more of a water issue, but I've found coolant tracks between they layers of multi-layer gaskets, as if the fire ring sealed, but there was not enough clamping pressure to seal the water jackets. That could alse be happening with the oil. Putting silicon on the gasket face didn't help, because it was seeping between the layers. We always use some form of stop-leak in engines that I assemble with a layered gasket which usually stops the water seepage. If you are actually getting oil seepage from the gasket, you may need to get sealer in between the layers.


Free advice and worth every penny...
Factory trained Slinky rewinder.........
Re: Cometics On Small Blocks [Re: Evil Spirit] #164186
12/08/08 12:16 PM
12/08/08 12:16 PM
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Lynchburg, VA
Leon441 Offline
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True there are no ports in the rear section of the cylinder head gasket. That doesn't mean that oil is not there. Under hard acceleration you get a lot of oil at the rear of the heads and lifter valley. This is why you rarely leak at the front but can easily have leaks at the rear.

I always spread a skim of RTV on the end of the head gaskets where they run up the block towards the intake area. These leaks can be pesty.

Leon


Career best 8.02 @ 169 at 3050# and 10" tires small block power.
Re: Cometics On Small Blocks [Re: Leon441] #164187
12/08/08 12:57 PM
12/08/08 12:57 PM
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Long Island, NY USA
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BergmanAutoCraft Offline OP
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Ryan - Sounds like a perfectly plausable scenerio, so I will have another look. Having had the trans out just a few weeks ago, I did not notice anything. Sometimes you just have to look a little harder.

Re: Cometics On Small Blocks [Re: BergmanAutoCraft] #164188
12/31/08 12:56 PM
12/31/08 12:56 PM
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Long Island, NY USA
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Turned out to be the dist...

Re: Cometics On Small Blocks [Re: BergmanAutoCraft] #164189
12/31/08 02:11 PM
12/31/08 02:11 PM
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Tulsa, Ok
WadeMetzinger Offline
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I thought I heard that Cometic doesn't recomend running their gaskets with Edelbrocks because of some alignment issues? Anyone heard that before, I think I heard that from Hughes.


Wade Metzinger 918-809-0987
71 Cuda 9.28@145 -1s, Pglide
68 Cuda 10.64@124 1.45 60's 318->390 eddys
Moparts discount code on WIX - moparts www.Filter1.com
Re: Cometics On Small Blocks [Re: BergmanAutoCraft] #164190
12/31/08 02:37 PM
12/31/08 02:37 PM
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Sunnyvale, CA
Jeepmon Offline
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Quote:

Turned out to be the dist...




Congrats on the fix...

Re: Cometics On Small Blocks [Re: WadeMetzinger] #164191
12/31/08 02:37 PM
12/31/08 02:37 PM
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Sunnyvale, CA
Jeepmon Offline
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Quote:

I thought I heard that Cometic doesn't recomend running their gaskets with Edelbrocks because of some alignment issues? Anyone heard that before, I think I heard that from Hughes.




I dont have any problems with my Eddys and Cometics.. Well not since I torqued them down to 110lbs

Re: Cometics On Small Blocks [Re: Jeepmon] #164192
01/02/09 08:38 PM
01/02/09 08:38 PM
Joined: Apr 2005
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Michigan
begood Offline
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I have Cometics on my 5.9 running 2.02 Magnum R/T heads with no problems.

Bill.


THERE IS NO SUCH THING, AS TOO MUCH HORSEPOWER
Re: Cometics On Small Blocks [Re: begood] #164193
01/02/09 09:10 PM
01/02/09 09:10 PM
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id usa
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were running cometics on our small block with eddy heads and have had problems with water leaking into the cam galley. cometic said they have had nothing but problems with the eddy heads and there gaskets. this was just found out today.

Re: Cometics On Small Blocks [Re: 4spdfury] #164194
01/02/09 09:17 PM
01/02/09 09:17 PM
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State College, PA
RyanJ Offline
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I'm going to pull out a new set of LA Cometics & lay them on a new set of SB E heads tomorrow & I will see whether there is anything that is wrong or not, I don't think there will be a problem, but I will post my findings tomorrow......

Re: Cometics On Small Blocks [Re: BergmanAutoCraft] #164195
01/02/09 11:52 PM
01/02/09 11:52 PM
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lino lakes,MN
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I have had no leaks from my cometics and magnum eddy heads.
Tom


10.56 at 125.6, with a 1.43 60 ft. E85, Hyd. Roller 410 magnum,full exhaust, 3500 race weight.
Re: Cometics On Small Blocks [Re: onebaddakota] #164196
01/03/09 12:41 AM
01/03/09 12:41 AM
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Newark, OH
Hunted Duck Offline
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My cometics leak also. First set didn't, but this set did.

Re: Cometics On Small Blocks [Re: Hunted Duck] #164197
01/03/09 10:09 AM
01/03/09 10:09 AM
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Tulsa, Ok
WadeMetzinger Offline
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I don't think the problem was with Magnum heads. Hughes said Cometic basically told them to stop using their gaskets with Eddies so they stopped. I like Cometics so I'd like to use them if I can so that's why I asked, figured there would be a lot of users that could confirm.


Wade Metzinger 918-809-0987
71 Cuda 9.28@145 -1s, Pglide
68 Cuda 10.64@124 1.45 60's 318->390 eddys
Moparts discount code on WIX - moparts www.Filter1.com
Re: Cometics On Small Blocks [Re: WadeMetzinger] #164198
01/03/09 11:48 AM
01/03/09 11:48 AM
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mi
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vcummins Offline
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I have had leaking on Eddies and magnum R/t heads and found that when riveted together they are some times NOT flat creating A bulge in the layers.

So I cut all (but one at the front) of the rivet tabs off with A cut off wheel and chamfer.

Spray copper between all the layers and install.

Doing this stops all the problems. Give it A try

4919927-Picture075.jpg (117 downloads)
Re: Cometics On Small Blocks [Re: vcummins] #164199
01/03/09 01:08 PM
01/03/09 01:08 PM
Joined: Jan 2003
Posts: 8,547
State College, PA
RyanJ Offline
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Here's a picture of the water passages on an LA E head & a W2....

There is absolutely no difference. So the theory about Cometics not working on LA E heads is thrown out the window as I thought.

They will seal water just fine if properly installed. I've never had a problem with a set but with so many people claiming there was an issue I figured I'd check the passages out & lay a gasket on & look for any issues, I found none.

4920071-100_0054.jpg (170 downloads)
Re: Cometics On Small Blocks [Re: RyanJ] #164200
01/03/09 01:11 PM
01/03/09 01:11 PM
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State College, PA
RyanJ Offline
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Here's an LA Cometic on the E head, there is no overhang issues etc.

Dunno what to tell the guys who have them leak other than to use more sealer, be absolutely sure on your TQ specs & using proper lube on your studs/bolts & let the gaskets "settle" & come back & re-torque after a few minutes until they take a "set" on the TQ.

4920074-100_0056.jpg (199 downloads)
Re: Cometics On Small Blocks [Re: vcummins] #164201
01/03/09 06:11 PM
01/03/09 06:11 PM
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Posts: 13,247
Mt. Vernon, Ohio
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Quote:

I have had leaking on Eddies and magnum R/t heads and found that when riveted together they are some times NOT flat creating A bulge in the layers.

So I cut all (but one at the front) of the rivet tabs off with A cut off wheel and chamfer.

Spray copper between all the layers and install.

Doing this stops all the problems. Give it A try


My last set of Cometics had that same issue of not being riveted correctly and I removed all but one also opened up the offending hole's and re riveted them, don't know if it would of been an issue but I didn't like it so I fixed it and I have no problem's,,if I would not have would it of leaked? don't know


Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
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